import { login, logout, getCurrentInfo } from '@/api/user'
import { getToken, setToken, removeToken } from '@/utils/auth'
import { resetRouter } from '@/router'

const getDefaultState = () => {
  return {
    token: getToken(),
    tokenType: '',
    name: '',
    avatar: ''
  }
}

const state = getDefaultState()

const mutations = {
  RESET_STATE: (state) => {
    Object.assign(state, getDefaultState())
  },
  SET_TOKEN: (state, token) => {
    state.token = token
  },
  SET_NAME: (state, name) => {
    state.name = name
  },
  SET_AVATAR: (state, avatar) => {
    state.avatar = avatar
  }
}

const actions = {
  // user login
  login({ commit }, userInfo) {
    const { client_id, client_secret, grant_type, username, password } = userInfo
    return new Promise((resolve, reject) => {
      login({ client_id: client_id, client_secret: client_secret, grant_type: grant_type, username: username.trim(), password: password })
        .then(response => {
          commit('SET_TOKEN', response.token_type + " " + response.access_token)
          setToken(response.token_type + " " + response.access_token)
          resolve()
        }).catch(error => {
          reject(error)
        })
    })
  },

  /**
   * 获取当前登录用户的信息
   * @param {*} param0 
   */
  getCurrentInfo({ commit, state }) {
    return new Promise((resolve, reject) => {
      getCurrentInfo().then(response => {

        const { data } = response
        if (!data) {
          return reject('Verification failed, please Login again.')
        }
        const { name, avatar } = data
        commit('SET_NAME', name)
        commit('SET_AVATAR', avatar)
        resolve(data)
      }).catch(error => {
        reject(error)
      })
    })
  },

  // user logout
  logout({ commit, state }) {
    return new Promise((resolve, reject) => {
      logout(state.token).then(() => {
        removeToken() // must remove  token  first
        resetRouter()
        commit('RESET_STATE')
        resolve()
      }).catch(error => {
        reject(error)
      })
    })
  },

  // remove token
  resetToken({ commit }) {
    return new Promise(resolve => {
      removeToken() // must remove  token  first
      commit('RESET_STATE')
      resolve()
    })
  }
}

export default {
  namespaced: true,
  state,
  mutations,
  actions
}

